Road-making machine.



C. F. KEABLBS.

ROAD MAKING MACHINE.

APPLICATION FILED HAYS, 1912.

LOSOJESOQB Patented May 6, 1913.

3 SHBETSSHEET L WASHINGTON LL L.

O. P. KEABLES.

ROAD MAKING MACHINE.

APPLICATION rum) mus, 1912.

3 SHEETSSHEBT 2.

C. F. KEABLES.

ROAD MAKING MACHINE.

APPLICATION FILED HAYS, 1912.

Patented May 6, 1913.

3 SHEETSSHEET 3.

N J. .v v J. 0 3 5. u .I i N L J l 7 I V. .1

CHARLES KEABLES, OF INDIANOLA, IOWA.

ROAD-MAKING MACHINE.

Specification of Letters Patent.

Patented May 6, 1913.

I Application filed May 6, 1912. Serial No. 695,560.

To all whom it may concern Be it known that'I, CHARLES F. KEABLEs, acitizen of the United States, residing at Indianola, in the county ofWarren and State of Iowa, have invented a new and useful Road-MakingMachine, of which the following is a specification.

' The object of my invention is to provide a road making machine ofdurable construction, for tamping dirt, gravel, rock, ashes or the like,and for smoothing the surface of a plungers, and having mechanism foroperat-ing those plungers alternately for tamping and smoothing thesurface of a road.

A further object of my invention is to provide a machine having tampingplungers and mechanism for operating the same and provided withmechanism for cleaning the plungers after each operation.

, A further object is to provide upon a movable platform, a hopper forrock, gravel or the like, in which hopper is a grate operated bysuitable mechanism for discharging the contents of the hopper upon thesurface of the road. I

A further object is to provide means for gradually moving the movableplatform forward on the stationary platform as the plungers areoperated.

A further object is to provide in such a machine, a roller or pair ofrollers for smoothing the road which has been tamped and to providemechanism for steering said roller or rollers.

A further object is to rovide in such a machine, means for raising theplungers slightly after each downward stroke to thereby prevent thedragging of the plungers on the ground.

My invention consists in certain detail, in the construction,arrangement and combination of the various parts of my device,wherebythe objects contemplated are attained, as hereinafter more fully setforth, pointed out in my claims, and illustrated in the accompanyingdrawings, in which:

Figure 1 shows a top or plan view of an improved road making machine,embodying my invention. Fig. 2 shows a side elevation of the same,omitting parts of the machine. Fig. 3 shows a detail view of part of themechanism for cleaning the plungers. Fig. A shows a detail view of thecleaner or scraper blade. Fig. 5 shows a detail view of part of themechanism for advancing the movable platform on the stationary platformduring the operation of the machine; and Fig. 6 shows a side elevationof my improved road making machine, part of the machine being removedand part being shown in section.

In the accompanying drawings 1 have used the reference numeral 10 toindicate generally, the stationary frame. On the front end .of the frame10 are wheels 11 which are mounted on stub axles 12, as

following means: Fixed to the shaft 15 is a toothed sector 19. Mountedin suitable bearings 20 and 21 is a shaft 22 formed on which is a wormgear 23 in mesh with the teeth of the sector 19. On one end of the shaft22 is a wheel 24 on which is a handle 25. I mount a movable frame 26 onthe frame 10 by means of flanged wheels 27 which are mounted ontransverse shafts28, which in turn are rotatably mounted in suitablebearings 28 on the frame 26. Rot-atably mounted in the bracket arms 13of the fixed frame is a transverse power shaft 29 on one end of which isa belt wheel 30 designed to be operated from any suitable source ofpower, as for instance, a traction engine. I shall call the end of themachine on which the rollers are mounted, the rear. end thereof, and theother end, the front end.

Rotatably mounted in the frame 26, near the rear end thereof, is atransverse shaft 30 Rotatably mounted. on the frame 26 in front of theshaft 30 is a transverse shaft Mounted on the shaft 29 in-line with thesprocket 33, is a sprocket wheel 34. Mounted on the shaft 31 in linewiththe sprockets,

33 and 34 is a sprocket gear 35. A sprocket chain 36 travels on thesprockets 33, 34 and 35. The shaft 31' is slightly above the level ofthe shafts 32 and"29 and the sprocket is therefore slightly above thelevel of the sprockets 33 and 34. On the frame 26 on .each side of" thesprocket 35, are mounted idlersprockets 37 on idler shafts 38. The,

chain 36 is designed to travel below the sprockets 38 and above thesprocket 35 as c early shown" in Fig. 2. It, will therefore be seen thatas the chain 36 ismgved by the rotation of the shaft 29 and the sprocket34, the sprocket 35' and the shaft 31 are rotated.

Pivotally mounted upon the shaft 30 and extending upwardly and.forwardly therefrom, are a plurality of plunger arms 39 on' the forwardends of which are arms 40' extendin upwardly and downwardly from theends o the arms 39. On the lower. ends of the arms 40 are heavy plungerheads 41, each of which is in outline, when viewed from above, in theform of a par'allelogram,

as shown in Fig. 1'. The arms 39 are spaced apart at such distances andthe plunger heads are of such width that a slight space is left betweeneach of the plunger heads 41.

- On each of the arms 39, approximately above the shaft 31, is mounted asmall roller 42 On the shaft 31 are mounted a plurality of cams 43,which engage the rollers 42 and raise the arms 39 as the shaft 31 isrotated. The cams 43 are so located on the shaft 31 that the arms 39 areraised and permitted to drop in succession. It will be seen that as .theshaft 31 is rotated, the arms 39 will be permitted to drop insuccession, The sur-. face of the road is thereby pounded or ta'mped bythe plunger heads 31. Mountedon the frame 26 is a transverse member 44on which are forwardly extending flat springs 45 which engage the lugs46, on the lower sides of the arms 39 when the arms 39 are at the lowerposition of their movement, and thereby exert yielding pressure to. holdthe plunger heads 41 a short distance above the point of the lower limitof their -movement. These springs also prevent or limit. the vibrationof the arms 39 and thereby tend to prevent crystallization and breakingof said arms, due to'constant use.

For cleaning the under surfaces of the v I lunger heads 41, I haveprovided thefolowing mechanism: Pivot-ally mounted on the shaft 30",adjacent to each of the arms 7 39, is 'acleaner arm 47 extendingupwardly and forwardly from'the shaft 30. Pivoted to the forward andupper end of-each of the arms 47 is a downwardly and rear'wardlyextendin link 48. lfivoted to the lower end of each l1nk 48 is a shortarm 49, in the for-' ward end of [which is a scraper blade 50.

.latter move upwarcllry arms 47 and the cleaner mechanism connectedtherewith, is limited by the cams 52. On each of the arms 39 is alaterally extending lug 60 designed to engage the adjacent arm 47 as thearm 39 is raised, and to raise the arm 47 with the arm 39. The cam 52 isso located and arranged that-as the arms 47 and 39 continue to moveupwardly, the

scraper blade moves forwardly scraping the lower' surface .of theplunger head 41, as

shown in Fig. 3.

It'will be noted that during the upward movement of the plunger head andthe cleaning mechanism, there is some friction between the roller 51 andthe rearward part of the cam 52, thereby tending to lower the rear endof the arm 49 and to raise the scraper blade 50 and to causesaid bladeto scrape the under surface of the plunger head 41. When the plunger andthe clean ing mechanism start on the outward stroke, the chief frictionof the roller 51 is against the forward part of the cam 52, therebytending to raise the rearward end of the arm 49 and to lower the scraperblade away from the plunger head 41. During this movement, the arm 49and the scraper blade 50 move pivotally with relation to the link 48.

For cleaning the sides of the plunger 3 heads 41, I provide brackets 55on whichare a plurality of scrapers 56 which extend .to position wherethey will approximately engage the sides of the plunger heads 41 as theOn thesides of t e frame 26 are upwardly extending brackets 57 which areconnected at their upper ends by a transverse member 58. 'On thetransverse member 58 are a plu-- rality of upwardly and forwardlyextending springs 59 which engage'the upper ends of the arms 40, at theupper limit of their movement, vand exertyielding pressure to start thedownward movement of the plunger head The action of the springs 49 isillustrated in Fig. 2. k

Mounted'on the forward part of'themovable platform 26 is a hop er 60extending across the machine. In the hopper 60 are two transverse shafts61 and '62 on which are grates 63, which may be tilted by the rotationof the shafts 61 and 62. I Mounted on the shafts 61- and 62 are half.gears 64 in mesh with each other. The grates 63 are tilted for.discharging the contents of the. hopper by the following means: On oneend of the shaft 62 is a lever arm 65 provided wardly extending link 68.

with a plurality of openings 66. Pivoted to the lever arm 65 by means ofa bolt 67 mounted in one of the openin s 66,;is arearn the link 68 areinwardly extending lugs 69 and 70 in which is slidingly mounted a link71. The

link 71 is pivoted to a lever arm 72 on the.

shaft 31. On the link 71, approximately midway between the lu s 69 and70, is a block 73. Between the b ock 73 and the lugs 69 and 70, are coilsprings 74 and 75. It will be seen that as the shaft 31 is rotated, thelinks 71 and 68 and the lever arms 72 and 65, will partially rotate theshaft 62 and thereby tilt the grates 63. In this connection it will benoted that the lever arm 65 is 9 longer than the lever arm. 72 so thatthe the machine, I provide the following means Mounted on the frame 10are downwardly extending brackets 81. The brackets 81 are provided withslots 82 in which are received bolts 83 whereby the brackets areadjustably secured to the frame 10. Mounted'on the forward, lower sideof the brackets 81 is-a transverse blade '84 designed to level thematerial discharged from the hopper 60.

For advancing the movable platform on the fixed plat-form during theoperation of On the side of the fixed platform opposite the side onwhich the chain 36 is located, is

' a notched bar 86. Mounted on the shaft 31 on the end thereof oppositethe sprocket 35,

is a gear wheel-87. Mounted on the frame 26 isa small ear wheel 88 inmesh with the gear wheel 8 gear wheel 88, is a pawl 89 designedto engagethe notches in the bar86; It will be seenthatas the gear wheel 87 isrotated, the

pawl 89 will be; drawn forwardly and. will then'be forced against thenotches in the bar 86 and will force the platform 26 forwardly, I mounton the platform 26,. a"

spring actuated awl 90 designed to engage wardly. The relative size ofthe gears 87 and 88 is such as to advance the platform 26 a certainpredetermined distance, for each revolution "of the shaft. 31. Toprevent rearward movement of the platform 26, while the pawl 89 is beingdrawn for the notches in t c ear 86. The gear 88 is mounted on a'stubshaft 91. Pivoted to the stub shaft 91; is alever 92. Fixed to thepawl-s90 is an upwardly extending arm 93.

The lever 92 and'the arm 93 are each piv- Pivoted off center on thevoted to a link 94. .Onthe lever 92- is an arm enga ement with thenotches in the bar 86;

In t is operation, the pin 96-engages the under surface of the pawl 89and raises said pawl; When the pawls 89 and 90 are .out of engagementwith said notches, the chain 36, which travelsin the direction indicatedby the arrow in ig. 2, tends to draw the platform 26 rearwardly. @111the platform 26 I mount a lever 97 having a cam shaped end 98 designedto engage the chain 36 above the sprocket 35' to thereby carry theplatform 26 rearwardly.

In the practical operation of my improved road making machine, a beltfrom any suitable source of power is connected with .the belt pulley 30.The hopper 60 is filled with any suitable material. When the wheel 30 isrotated, the chain 36 through the sprocket 35 rotates the shaft 31 andthereby alternately raises the arms 39, thus alternately raising anddropping the plun-- ger heads 41. As the plunger'heads are.

raised, their lower surfaces are cleaned by means of the mechanismheretofore described, and their sides .are' also cleaned by means of thescraper arms 56. en the arms. 40 reach the upward limit of theirmovement they engage the springs 59, which exert yielding pressure 'tostart the downward stroke of the plungcrs. Near the lower position ofthe arms 39,'the lugs 4'6 engage the springs 45, which lift the arms 39a'short distance above the point of the lower limit of their movement.If it is desired to discharge the contents of the hopper, a pin 99 inthe crank 72 is removed and the arm 71 is removed from said crank. Themachine may be thrown out of gear at any time by the operation of thelever 80. The'tilting motion imparted to the grates 63' may be regulatedby placing the bolt 67 in different holes, 66. e

-.When the platform 26 is advanced to the forward limit of its movementonv the plat= form 10, the pawls 89 and 90 may be thrown out ofengagement with the notches in the bar 86 by means. of the lever 92 andthe lever 97 maybe raised to cause the sprocket 35 and the movableplatform to travel with the chain 36 rearwardly with relation to theplatform 10. The machine may then be moved forwardly by any suitabletraction power and theoperation-oftamping repeated. t

It will be seen that a, great many changes may he made inrtheconstruction of, my machine withoutdeparting from its essentialfeatures. I l

The removable frame and the mechanism thereon may be used independent.of the I fixed frame, and may be propelled by any platform to itsrearward position.

suitable motive power.

Among the many advantages of my improved road makingmachine, are thearrangement of the cams 43 whereby the plungers are alternately raised,thereby permitting the machine to operate without any considerablevariation in the amount of powernecessary for rotating the shaft 31. Themovable platform is moved forwardly by the mechanism heretoforedescribed, as the tamping process is carried on. same power whichworksthe tamping arms and plunger heads, and operates the hop per,advances the movable platform on the fixed platform and returns. themovable The form of the plunger heads, the lower surfaces of which arein the shape of a parallelogram, leaves no untam'ped strip in the road.The rear part of the fixed platform is carried by the rollers 18. Thereare two.

of the rollers 18 steered by the mechanism .heretofore described,thereby enablingsme 25.

to accomplish somewhat the same purpose aswou ld be accomplished by adifferential gear.

I claim as my invention:

1. In a device of the class described, a frame, a plurality of tampingmeans mounted on said frame and means operating said tamping means, ahopper located in front of said tamping means, means for discharging thecontents ofsaid hopper in the path of said tamping means and a scraperarranged between said hopper and said tamp ing means.

2. In a device of the class described, a frame, aplurality of tampingdevices operatively mounted thereon, a transverse shaft, means on saidshaft for operating said tamping devices, a hopper arranged in frontof'saidtamping devices and means operated from said shaft fordischarging the contents of said hopper in the path of said tampingdevices.

3. In a device of the class described, a

. frame, a plurality of tamping means mount,-

ed thereon, means for operating said'tamp-- ing means, means forcleaning the under surfaces of said tamping means and means foroperating said cleaning means.

4. In a device of the class described, a frame, a plurality of tampingmeans mounted thereon, means for operating said tamping means, means forcleaning the under surfaces offsaid tamping means, means for cleaningthe sides of said tamping means and means for operating said cleaningmeans. I

5. Ina device of the class described, a frame, a plurality of plungerheads, means for alternately raising said plunger heads,

means for cleaning the lower surfaces of 1 said plunger heads, duringtheir upward The movement and means for operating said cleaning means.

- 6. In a device of the class described, aframe, a transverse shaftmounted-therein, an arm pivoted to said shaft, a plunger mounted on theupper end of said arm, means for raising said arm and means for cleaningthe under surface of said plunger,

said means comprising a scraper blade and means for moving said bladealong the under surface of said plunger.

7. In a device of the class described, a,

frame, a transverse shaft mounted therein,

an arm pivoted to said shaft, a plunger mounted on the upper end of saidarm,

means for raising said arm, means for clean ing saidyplunger said meanscomprising a pivoted arm pivoted on said transverse shaft and ofapproximately the same length as said first named arm, a downwardlyextending linlrpivoted to said second named arm, a scraper blade pivotedto said link having a rearwardly extending arm, a slotted cam, a rolleron said-rearwardly extending arm, designed to travel in said cam,

Sitld partsbelng so arranged ."that said scraper blade passes across thelower surface of said plunger during the upward movement thereof.

8. In a device of the class described, a frame, a transverse shaftmounted therein, a plurality of arms pivoted to said shaft, a plunger ortamper on each of said arms, means for alternately raising said arms,and means for cleaning the sides of saidplungers, said means comprisingscraperblades so located as ,to scrape the sides of said plungers duringtheir upward movement. 9. In a device of the class described, a fixedframe, a movable frame rotatably mounted thereon, a plurality of tamping7 devices mounted on said movable frame,

means for alternatelymaising said tamping' devices, a hopper on saidmovable frame, movable grates in said hopper, and means foroperatingsaid grates.

10. Ina device of the class described, a fixed frame, a movable framemounted thereon, a plurality of'tamping devices-on said movable frame, apower shaft rotatably mounted on said fixed frame, an idler shaftmounted on said fixed frame, a drivenshaft mounted on said movableframe, means whereby said tamping devices are operated by the rotationof said driven shaft, sprocket wheels on said shafts, a sprocket chainon said sprocket wheels, and means for advancing said movable frame onsaid fixed fram when said driven shaftis operated.

11. In a device of the class described, a fixed frame, a movable framemounted thereon, a plurality of tamping devices on said movable frame, apower shaft rotatably mounted on saidfixed frame, an idler shaftmountedon said fixed frame, a driven shafi mounted on said movable frame, meanswhereby said tamping devices are operated by the rotation of said drivenshaft, sprocket wheels on said shafts, a sprocket chain on said sprocketwheels, means for advancing said movable frame on said fixed frame whensaid driven shaft is operated, said means comprising a notched bar onsaid fixed frame, a gear wheel on said driven shaft, a gear wheel onsaid movable frame, in mesh with said first gear wheel, a bar pivotedoff center on said second gear wheel and designed to engage the notcheson said bar, and means forsecuring said movable frame against movementin one direction,

12. In a device of the class described, a fixed frame, a movable framemounted thereon, a plurality of tamping devices on said movable frame, apower shaft rotatably mounted on said fixed frame, an idler shaftmounted on said fixed frame, a driven shaft mounted on said movableframe, means whereby said tamping devices are operated by the rotationof said driven shaft, sprocket wheels on said shafts, a sprocket chainon said sprocket wheels, means for advancing said movable frame on saidfixed frame when said driven-shaft is operated, said means comprising anotched bar on said fixed frame, a gear wheel on said driven shaft, agear wheel on said movable frame, in mesh with said first gear Wheel anddesigned to engage the notches in said bar for means for securing saidmovable frame against movement in one direction, said means comprising aspring actuated pawl designed to engage the notches in said bar.

13. In a device of the class described, a fixed frame, a movable framemounted thereon, a plurality of tamping devices on said movable frame, apower shaft rot-atably mounted on said fixed frame, an idler shaftmounted on said fixed frame, a driven'shaft mounted on said movableframe, means whereby said tamping devices are operated by the rotatingof said driven shaft, sprocket wheels on said shafts, a sprocket chainon said sprocket wheels, means for advancing said movable frame on saidfixed frame when said driven shaft is operated, ,said

means comprising a notched bar on said fixed frame, a gear wheel on saiddriven shaft, a gear wheel on said movable frame, in mesh with saidfirst gear wheel, apawl pivoted off center in said last named gear wheeland designed to engage the notches in said bar, a sprin actuated pawlmounted on said movable frame and designed to engage said notches andmeans for moving both of said pawls out of engagement with said notches.

14. In a device of the class described, a

frame, a plurality of tamping devices oper- CHARLES F. KEABLES.

Witnesses:

M. WALLACE, A. G. HAGUE.

